student of a school were made to stand in rows for drill . if 3 studen

1.	student of a school were made to stand in rows for drill . if 3 students less were standing in each row , 10 more rows were required and if 5 students mire were standing in each row then the number of rows was reduced by 10 . find the number of students participating in the drill
Answer» hope it helps you Step-by-step explanation: LET the number of rows be x and number of STUDENTS in each row be y Then total students will be=x*y Now according to question (x+10)(y-3)=xy xy-3x+10y-30=xy 10y-3x-30- --(eq1) Now.. (x-10)(y+5)=xy xy+5x-10y-50=xy 5x-10y 50 --(eq 2) ADDING eq 1 and 2 we get 2x=80 X=40 Putting x=40 in eq 1 we get 10y-120=30 10y=150 y=15

student of a school were made to stand in rows for drill . if 3 students less were standing in each row , 10 more rows were required and if 5 students mire were standing in each row then the number of rows was reduced by 10 . find the number of students participating in the drill

Answer»

hope it helps you

Step-by-step explanation:

LET the number of rows be x and

number of STUDENTS in each row be y

Then total students will be=x*y

Now according to question

(x+10)(y-3)=xy

xy-3x+10y-30=xy

10y-3x-30- --(eq1)

Now..

(x-10)(y+5)=xy

xy+5x-10y-50=xy

5x-10y 50 --(eq 2)

ADDING eq 1 and 2 we get

2x=80

X=40

Putting x=40 in eq 1 we get

10y-120=30

10y=150

y=15